CN100450303C - Method for realizing switching between SGSNs - Google Patents

Method for realizing switching between SGSNs Download PDF

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Publication number
CN100450303C
CN100450303C CNB2006100022222A CN200610002222A CN100450303C CN 100450303 C CN100450303 C CN 100450303C CN B2006100022222 A CNB2006100022222 A CN B2006100022222A CN 200610002222 A CN200610002222 A CN 200610002222A CN 100450303 C CN100450303 C CN 100450303C
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sgsn
qos
attribute
new
qosr97
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CN1867185A (en
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陈靖
陈琳
刘康
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The present invention discloses a method for realizing switch among SGSNs, which has a core that when a UMTS/GPRS R99 SGSN is switched to a GPRS R97/98 SGSN, a user signed contract QoSR99 attribute is sent to the SGSN on the new side after converted to a corresponding QoSR97/98 attribute by the SGSN on the old side according to a mapping rule stipulated by a protocol; new QoS is negotiated by the SGSN on the new side according to the signed contract QoSR97/98 attribute and is sent to a GGSN. When the GPRS R97/98 SGSN is switched to the UMTS/GPRS R99 SGSN, new QoS is negotiated by the SGSN on the new side according to the QoSR99 attribute in signed contract data and is sent to the GGSN. Thus, an actually used QoS attribute can be guaranteed to be in conformity with a signed contract QoS attribute by adopting the technical scheme of the present invention so that the satisfaction degrees of a carrier and a user are enhanced.

Description

The implementation method of switching between SGSN
Technical field
The present invention relates to network communications technology field, relate in particular to the implementation method of switching between a kind of SGSN.
Background technology
SGSN (Serving GPRS (General Packet Radio Service, GPRS) Support Node, Serving GPRS Support Node) is GPRS/UMTS (Universal MobileTelecommunications System, Universal Mobile Telecommunications System) capital equipment of packet domain core network network is finished the route of packet data package and forwarding, encryption and authentication, session management, mobile management, Logical Link Management, ticket produces and functions such as output.Its position in mobile communications network is as shown in Figure 1: SGSN is at PS (Packet Service, Packet Service) position in the territory and CS (English, Chinese) MSC (the Mobile Switch Center in territory, mobile switching centre)/VLR (English, Chinese) similar, its Core Feature is by MM (Mobility Management, mobile management), SM (Session Management, session management), GTP (tunnel management) etc. realize that business datum is at MS (Mobile Subscriber, the mobile subscriber) with GGSN (Gateway GPRS SupportNode, Gateway GPRS Support Node) between route and forwarding capability.
The user must adhere to activate with PDP and just can carry out transfer of data.In attachment flow, SGSN judges whether to allow the user to insert from the subscription data that HLR (Home Location Register, user attaching register) obtains the user by subscription data.Also comprise the contextual CAMEL-Subscription-Information of PDP (Packet DataProtocol, packet data protocol) in the subscription data.In the PDP activation process, SGSN can compare according to the data and the subscription data of user in HLR of user's request, judges whether to allow PDP Context to set up.Also comprise signatory QoS (Quality of Service, service quality) information in the signatory PDP Context.
QoS is a third generation communication system provides the assurance of wideer bandwidth, more stable personalized service for the user.
As everyone knows, the network service realizes according to end-to-end.Have only each entity of network all to provide corresponding QoS to guarantee the QoS that the user just can obtain wishing.
As packet domain core network equipment, in the activation process of PDP Context, SGSN is according to the ability of self, QoS, the QoS that the user contracts to MS (travelling carriage) request hold consultation, the QoS that obtains consulting, and the QoS that consults is notified to related entities such as GGSN, RNC, BSS and UE, makes each network entity all preserve unified QoS, and realize this QoS.Like this, the user could finally carry out obtaining due service in the transfer of data.
Continuous development along with the communication technology, QoS attribute in the 3GPP agreement has also experienced the evolution of a plurality of protocol versions, goes so far as present QoSR5 (service quality of 2005 versions) from QoSR97/98 (service quality of 97/98 version), QoSR99 (service quality of 99 versions).In this evolution, variation has also taken place in the QoS attribute.Such as, QoSR97/98 and QoSR99 attribute comprise diverse parameter.Because in actual applications in the total system equipment of a cover GPRS/UMTS packet field network, the QoS version that each network element is supported all might be different, for the reliability that guarantees to interconnect between UMTS equipment and the existing network GPRS equipment, the compatible processing that must accomplish QoSR97/98 equipment and QoSR99 equipment.
Therefore consider that compatibility, agreement 3GPP TS 23.107 stipulated the mapping ruler between QoSR97/98 parameter and the QoSR99 parameter.
Agreement 3GPP TS 23.107 mappings of regulation from the QoSR97/98 attribute to the QoSR99 attribute are applied to: PDP Context switches to UMTS or GPRS R99 SGSN (promptly supporting the SGSN of 99 version service quality) from GPRS R97/98 SGSN (promptly supporting the SGSN of 97/98 version service quality).Simultaneously, agreement 3GPP TS 23.060 regulations, when PDP Context switched to UMTS or GPRS R99 SGSN from GPRS R97/98 SGSN, it was the QoSR99 parameter that new side SGSN is responsible for the QoSR97/98 parameter maps.
Agreement 3GPP TS 23.107 mappings of regulation from the QoSR99 attribute to the QoSR97/98 attribute are applied to: PDP Context switches to GPRS R97/98 SGSN from UMTS/GPRS R99 SGSN.Simultaneously, agreement 3GPP TS 23.060 regulation, PDP Context is when UMTS or GPRS R99 SGSN switch to GPRS R97/98 SGSN, and it is the QoSR97/98 parameter that old side SGSN is responsible for the QoSR99 parameter maps.
The user is in the process that moves, may be at different BSS (GSM base station sub-system)/RNC (Radio Network Control, wireless network control) switches between, if new and old BSS/RNC belongs to different SGSN, then need by the location management flow process between SGSN user MM context and PDP Context to be moved to new side SGSN from old side SGSN, this process is referred to as the switching flow between SGSN.
Switching flow between the SGSN of prior art scheme as shown in Figure 2.
In the handoff procedure between SGSN, old side SGSN can be by SGSN Context Response (SGSN context response) message with PDP Context at the QoS of old side SGSN request, QoS that the user contracts and the QoS of use, send to new side SGSN.New side SGSN is according to these QoS, in conjunction with the ability of self, consult the QoS that makes new advances, and the QoS that this is new gives GGSN by Update PDP Context Request (upgrading the PDP Context request) message informing.New then side SGSN sends Update GPRS Location (upgrading the GPRS position) message informing HLR to HLR and carries out the renewal of SGSN position, can cancel the user's who preserves among the old side SGSN subscription data after HLR has notice, and user's subscription data is sent to new side SGSN by Insert Subscriber Data (insertion user contracting data) message.
But in the existing network equipment, the regulation that some equipment can't carry on an agreement fully.If QoSR99 attribute among HLR and/or the UE and QoSR97/98 attribute are not observed the mapping ruler between QoSR97/98 and the QoSR99, when the user moves because of the position, when between the SGSN that supports diversity of protocol versions, switching repeatedly, because the new QoS of QoSR97/98 attribute negotiation during SGSN contracts based on the user may cause that the QoS attribute of actual use and the QoS attribute of contracting are not inconsistent; And when the actual QoS attribute that uses during greater than signatory QoS attribute, the bandwidth that provides to the user surpasses user's demand, causes the wasting of resources, causes the discontented of operator; The QoS attribute that uses when reality is during less than signatory QoS attribute, and the bandwidth that provides to the user can not satisfy user's demand, can cause that the user's is discontented.
Illustrate employing prior art scheme below and cause the situation of the QoS attribute of actual use greater than signatory QoS attribute.
Suppose, in the QoSR99 attribute that the user contracts, up-downgoing Maximum bitrate (maximum those special rates) is 64kbps, but the Peak throughput class (Chinese) in the QoSR97/98 attribute is 9, and the discontented view regulation QoSR99 of football association attribute is to the mapping ruler of QoSR97/98 attribute; MS supports QoSR99; SGSN1 supports UMTS or GPRS R99, and SGSN2 only supports GPRS R97/98; When SGSN consults QoS, do not consider the ability of himself, only consult the QoS that uses jointly according to the QoS of signatory QoS of user and request.MS uses the QoSR99 attribute to insert SGSN1, and the QoS attribute of MS request is identical with the QoS attribute that the user contracts, and it is also identical with the QoS attribute that the user contracts that SGSN1 finally consults the QoS attribute that uses.
Because move the position, in the time of PDP Context need being switched to SGSN2, SGSN1 sends to SGSN2 by SGSN Context Response message with PDP Context as MS.According to the regulation of agreement, SGSN1 asks QoS, signatory QoS with MS and the QoSR97/98 that finally consults in the QoS attribute partly sends SGSN2 to.Like this, request QoS that SGSN2 receives and the Peakthroughput class among the signatory QoS still are 9, also are 9 by the Peak throughput class among the QoS of these parameter negotiations, and SGSN2 can use this to consult QoS and remove to upgrade GGSN.
As MS because the position move, again with PDP Context when SGSN2 moves back to SGSN1, SGSN2 sends to SGSN1 with PDP Context.According to the regulation of agreement, SGSN2 asks MS QoS, signatory QoS and finally consults QoS attribute (being QoSR97/98) to send SGSN1 to.SGSN1 confirms the network capabilities support R99 of UE, the QoSR97/98 attribute need be converted to the QoSR99 attribute, according to the mapping ruler of QoSR97/98 attribute to the QoSR99 attribute, at this moment the Maximum bitrate among signatory QoS and the request QoS has become 2048kbps, Maximumbitrate among the QoS that goes out by these parameter negotiations has also become 2048kbps, and SGSN1 can use this unusual negotiation QoS to remove to upgrade GGSN then.Like this, the QoS attribute of reality use is far longer than signatory QoS attribute.Therefore can cause the wasting of resources, cause the greatly discontented of operator.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the implementation method of switching between a kind of SGSN, between SGSN in the handoff procedure, based on the signatory new QoS of QoSR99 attribute negotiation of user, the QoS attribute that can guarantee actual use meets the QoS attribute that the user contracts, thereby improves operator and user's satisfaction.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the implementation method of switching between a kind of SGSN, when old side Serving GPRS Support Node SGSN is UMTS/GPRS R99 SGSN, and new side SGSN is when being GPRS R97/98 SGSN, and this method comprises the steps:
After A, old side SGSN receive the SGSN context request of new side SGSN, mobile station MS request QoS in confirming the packet data protocol PDP Context does not satisfy the QoSR99 attribute after QoSR97/98 best property of attribute mapping rule, user's subscribed services quality Q oSR99 attribute in the packet data protocol PDP Context is changed out corresponding QoSR97/98 attribute according to the QoSR99 attribute to QoSR97/98 best property of attribute mapping rule, and send to new side SGSN;
The QoS that B, new side SGSN contract the QoSR97/98 attribute and make new advances in conjunction with the self-ability negotiation according to the user who receives;
The new QoS that C, new side SGSN will negotiate sends to Gateway GPRS Support Node GGSN.
Described steps A specifically comprises: after A1, old side SGSN receive the SGSN context request of new side SGSN, mobile station MS request QoS in confirming PDP Context does not satisfy described QoSR99 attribute after QoSR97/98 best property of attribute mapping rule, and the QoSR99 attribute of described MS request QoS is changed out corresponding QoSR97/98 attribute according to described QoSR99 attribute to QoSR97/98 best property of attribute mapping rule;
A2, old side SGSN are carried on the QoSR97/98 attribute among the use QoS in described MS request QoSR97/98 attribute of changing out and the PDP Context in the SGSN context response SGSN ContextResponse message and send to new side SGSN.
Described step B comprises: new side SGSN is according to the signatory QoSR97/98 attribute of the user who receives; Perhaps new side SGSN is according to the QoSR97/98 attribute of signatory QoSR97/98 attribute of the user who receives and MS request; Perhaps, new side SGSN is according to the QoSR97/98 attribute of signatory QoSR97/98 attribute of the user who receives and use, and consults the QoS that makes new advances in conjunction with self-ability.
Described step C comprises: the new QoS that new side SGSN will negotiate is carried on to upgrade in the PDP Context request Update PDP Context Request message and sends to GGSN.
This method also comprises: new side SGSN is carried on Routing Area Update with the described new QoS that negotiates and accepts to send to MS in the Routeing Area Update Aceept message.
The present invention also provides the implementation method of switching between a kind of SGSN, and when new side SGSN is UMTS/GPRS R99 SGSN, and old side SGSN is GPRS R97/98 SGSN, and when MS supported 99 version QoS agreements, this method comprised the steps:
After e, new side SGSN confirm that MS supports 99 version QoS agreements, consult the QoS that makes new advances according to the QoSR99 attribute in the user contracting data and in conjunction with self-ability; Described new QoS is as the first new QoS;
The first new QoS that f, new side SGSN will negotiate sends to GGSN.
Comprise before the described step e:
After a, old side SGSN receive the SGSN context request of new side SGSN, signatory QoS of the user in the PDP Context and MS request QoS are sent to new side SGSN with the QoSR97/98 attribute that uses QoS;
The MS request QoS that b, new side SGSN send according to old side SGSN, the signatory QoS of user and/or use QoS negotiate the second new QoS in conjunction with self-ability, and this second new QoS are sent to GGSN;
C, new side SGSN notice HLR upgrade the SGSN position, after HLR has notice user contracting data are sent to new side SGSN.
Described step e comprises:
After e1, new side SGSN confirm that MS supports 99 version QoS agreements, will ask QoS from the MS that old side SGSN receives and/or use the QoSR97/98 attribute of QoS to change out corresponding QoSR99 attribute to QoSR99 best property of attribute mapping rule according to the QoSR97/98 attribute;
E2, new side SGSN are according to the QoSR99 attribute in the user contracting data of HLR transmission; Perhaps, new side SGSN is according to the QoSR99 attribute of the QoSR99 attribute in the described user contracting data with the MS request of changing out; Perhaps, new side SGSN is according to the QoSR99 attribute of QoSR99 attribute in the described user contracting data and use, and negotiates the first new QoS in conjunction with self-ability.
Described step f comprises:
New side SGSN is carried on the described first new QoS that negotiates in the Update PDP Context Request message and sends to GGSN, and GGSN sends Update PDPContext response message to new side SGSN after receiving this message.
This method also comprises:
New side SGSN is carried on the described first new QoS that negotiates to revise in the PDP Context request ModifyPDP Context Request message and sends to MS, if MS accepts the described first new QoS that negotiates again, then send the modification PDP Context and accept Modify PDP Context Acccpt message to new side SGSN.
As seen from the above technical solution provided by the invention, adopt method of the present invention to have following advantage:
1, between SGSN in the handoff procedure, based on the signatory new QoS of QoSR99 attribute negotiation of user, even therefore QoSR99 attribute among HLR and/or the MS and QoSR97/98 attribute are not observed the mapping ruler between QoSR97/98 and the QoSR99, also can guarantee the correctness of the QoS attribute of actual use, the promptly actual QoS attribute that uses is consistent with the QoS attribute that the user contracts, thereby improves operator and user's satisfaction;
2, technical scheme of the present invention can realize by existing protocol fully, so technical scheme is simple, and can be well and existing protocol and hardware compatibility.
Description of drawings
Fig. 1 is the GPRS/UMTS schematic network structure;
Fig. 2 is the switching flow figure between SGSN;
Switching flow figure between the SGSN that Fig. 3 provides for the embodiment of the invention two.
Embodiment
Method provided by the invention comprises two kinds of specific implementations, a kind of be when old side SGSN be UMTS/GPRS R99 SGSN, and when new side SGSN is GPRS R97/98 SGSN, another be when new side SGSN be UMTS/GPRS R99 SGSN, and old side SGSN is GPRS R97/98 SGSN, and when MS supports QoSR99, the implementation that switches between SGSN.
Switching flow between the flow process of technical scheme one provided by the invention and existing SGSN is basic identical, difference is: receive the SGSN context request of new side SGSN as old side SGSN after, ask QoS and/or the signatory QoS of user to change out corresponding QoSR97/98 attribute to QoSR97/98 best property of attribute mapping rule MS, and send to new side SGSN according to the QoSR99 attribute.
Preferred version is: receive the SGSN context request of new side SGSN as old side SGSN after, judge at first whether MS request QoS and the signatory QoS of user in the PDP Context satisfy the QoSR99 attribute to QoSR97/98 best property of attribute mapping rule, if do not satisfy mapping ruler, then MS is asked the signatory QoS of QoS and/or user to change out corresponding QoSR97/98 attribute to QoSR97/98 best property of attribute mapping rule, and send to new side SGSN according to the QoSR99 attribute.
Below in conjunction with accompanying drawing technical scheme one provided by the invention is described in detail.
The specific implementation of technical scheme one provided by the invention may further comprise the steps with reference to switching flow between SGSN as shown in Figure 2:
Step 201: because move the position, in the time of need switching between the SGSN that supports diversity of protocol versions, MS initiates the Routing Area Update request to new side SGSN as the user.
MS can initiate the Routing Area Update request by sending Routeing Area Update Request (Routing Area Update request) message to new side SGSN.
Step 202: new side SGSN receives the PDP Context that sends SGSNContext Request (SGSN context request) this MS of message request after the Routing Area Update request of MS to old side SGSN.
Step 203: after old side SGSN receives SGSN Context Request message, judge between the signatory QoS of user in the PDP Context of this MS and/or QoSR99 attribute in the MS request QoS information and the QoSR97/R98 attribute whether satisfy the mapping ruler (mapping ruler promptly below in table 1) of the QoSR99 attribute of agreement 3GPP TS 23.107 regulations to the QoSR97/98 attribute;
If the signatory QoS of user all satisfies the mapping relations that agreement is stipulated with request QoS information, then old side SGSN directly uses the QoSR97/R98 attribute among the QoS to send to new side SGSN by SGSN Context Response message signatory QoS, MS request QoS of the user in the PDP Context of this MS and reality;
If the mapping relations of signatory QoS of user and/or the discontented football association of request QoS information view regulation, then old side SGSN revises the QoS that the user contracts and/or the QoSR97/R98 attribute of request QoS information according to the mapping ruler of table 1, just the QoSR99 attribute of signatory QoS of user and/or request QoS is changed out corresponding QoSR97/98 attribute according to the mapping ruler of agreement regulation, then the QoS information that does not need to change in the QoSR97/98 attribute changed out and the PDP Context information is sent to new side SGSN by SGSNContext Response message.
Step 204: new side SGSN sends SGSN Context Acknowledge (the SGSN context is replied) message to old side SGSN after receiving SGSN Context Response message, and the PDP Context information of this MS is received in expression;
Then, new side SGSN is according to the signatory QoSR97/98 attribute of the user who receives, perhaps according to signatory QoSR97/98 attribute of the user who receives and request QoSR97/98 attribute, consult the QoS that (promptly determining) makes new advances perhaps according to signatory QoSR97/98 attribute of the user who receives and the actual QoSR97/98 attribute that uses, and in conjunction with self-ability.
Step 205: the new QoS that new side SGSN will negotiate sends to GGSN by Update PDP Context Request message, and notice GGSN upgrades QoS.
Step 206:GGSN sends Update PDP ContextResponse (upgrading the PDP Context response) message to new side SGSN after receiving new QoS information.
Step 207: new side SGSN carries out the renewal of SGSN position by send Update GPRS Location message informing HLR to HLR.
After step 208:HLR receives the SGSN location update message, by sending the user contracting data that the old side SGSN of CancelLocation (canceling position) message informing deletes this MS of its preservation to old side SGSN.
Step 209: old side SGSN sends Cancel Location Ack (canceling position is replied) message to HLR after deleting the user contracting data of this MS of its preservation.
After step 210:HLR receives the Cancel Location Ack message of old side SGSN, the user contracting data of this MS is sent to new side SGSN by Insert Subscriber Data message.
Step 211: new side SGSN receives and preserves behind the user contracting data of this MS and send Insert Subscriber Data Ack (inserting user contracting data replys) message to HLR.
Step 212:HLR sends Update GPRS Location Ack (upgrading the GPRS position replys) message to new side SGSN after receiving the insertion user contracting data response message of new side SGSN.
Step 213: after new side SGSN receives the Update GPRS Location Ack message of HLR, its QoS attribute that negotiates is sent to MS by Routeing Area Upaate Accept (Routing Area Update acceptance) message.
After step 214:MS receives the Routeing Area Update Accept message of new side SGSN, send Routeing Area Update Complete (Routing Area Update is finished) message to new side SGSN.
According to the agreement regulation, this step is an optional step.
Increased a QoS modification process on the switching flow basis between the flow process of technical scheme two provided by the invention and existing SGSN, be that new side SGSN is after MS has sent Routeing Area Update Accept message, again consult QoS according to the QoSR99 attribute in the subscription data of HLR transmission, and the QoS that will consult again is notified to GGSN and MS.
Below in conjunction with accompanying drawing technical scheme two provided by the invention is described in detail.
The specific implementation of technical scheme two provided by the invention may further comprise the steps as shown in Figure 3:
Step 301: because move the position, in the time of need switching between the SGSN that supports diversity of protocol versions, MS sends Routeing Area Update Request message to new side SGSN and initiates the Routing Area Update request as the user.
Step 302: new side SGSN receives the PDP Context that sends this MS of SGSNContext Request message request after the Routing Area Update request of MS to old side SGSN.
Step 303: after old side SGSN receives SGSN Context Request message, the SGSN Context Response message of passing through of this MS is sent to new side SGSN, and this PDP Context comprises: MS is in the signatory QoS of QoS, user and the MS request QoS information of the actual use of old side SGSN.
Because old side SGSN is GPRS R97/98 SGSN, therefore the QoS information that sends to new side SGSN is the QoSR97/98 attribute.
Step 304: new side SGSN sends SGSN Context Acknowledge (the SGSN context is replied) message to old side SGSN after receiving SGSN Context Response message, and the PDP Context information of this MS is received in expression.
Then, the signatory QoS of user that new side SGSN basis is received consults the QoS that makes new advances with the QoS information of request QoS and/or actual use and in conjunction with self-ability.
Step 305: new side SGSN sends Update PDP Context Request message informing SGSN to GGSN and changes, the new QoS that negotiates can also be sent to GGSN by this message simultaneously.
Step 306:GGSN sends Update PDP ContextResponse message to new side SGSN after receiving new QoS information.
Step 307: new side SGSN carries out the renewal of SGSN position by send Update GPRS Location message informing HLR to HLR.
After step 308:HLR receives the SGSN location update message, by sending the user contracting data that the old side SGSN of CancelLocation message informing deletes this MS of its preservation to old side SGSN.
Step 309: old side SGSN sends Cancel Location Ack message to HLR after deleting the user contracting data of this MS of its preservation.
After step 310:HLR receives the Cancel Location Ack message of old side SGSN, the user contracting data of this MS is sent to new side SGSN by Insert Subscriber Data message.
Include the QoSR99 attribute in this user contracting data.
Step 311: new side SGSN receives and preserves behind the user contracting data of this MS and send Insert Subscriber Data Ack message to HLR.
Step 312:HLR sends Update GPRS Location Ack message to new side SGSN after receiving the insertion user contracting data response message of new side SGSN.
Step 313: new side SGSN sends Routeing Area Update Accept message to MS after receiving the Update GPRS Location Ack message of HLR.
After step 314:MS receives the Routeing Area Update Accept message of new side SGSN, send Routeing Area Update Complete message to new side SGSN.
According to the agreement regulation, this step is an optional step.
Step 315: new side SGSN consults QoS again according to the QoSR99 attribute in the user contracting data of HLR transmission and in conjunction with self-ability, if the QoS that negotiates in the QoS that negotiates again and the step 304 is different, then the QoS that this is negotiated again sends to GGSN by Update PDP Context Request message.
If new side SGSN is except the QoS that contracts according to the user, also need to consult new QoS according to request QoS and/or the actual QoS of use, so before consulting QoS, new side SGSN needs and will change out corresponding QoSR99 attribute according to the QoSR97/98 attribute of table 2 to the mapping ruler of QoSR99 attribute from request QoS and/or the actual QoS of use that old side SGSN receives, and then according to the QoSR99 attribute in the user contracting data, perhaps according to QoSR99 attribute in the user contracting data and request QoSR99 attribute, perhaps according to QoSR99 attribute in the user contracting data and the actual QoSR99 attribute that uses among the QoS, and carry out the negotiation of QoS in conjunction with self-ability.
Step 316:GGSN sends Update PDPContext Response message to new side SGSN after receiving this QoS that negotiates again.
Step 317: after new side SGSN receives the Update PDP Context Response message of GGSN, the QoS after consulting is again sent to MS by Modify PDP Context Request (revising the PDP Context request) message.
Step 318: if the QoS after MS accepts to consult again, MS sends ModifyPDP Context Accept (revising PDP Context accepts) message to new side SGSN; If the QoS after MS does not accept to upgrade then will initiate PDP deexcitation flow process.
Therefore adopt technical scheme one provided by the invention and technical scheme two, can both solve the QoS attribute and the signatory inconsistent problem of QoS attribute of the actual use that may cause when QoSR99 attribute among HLR and/or the MS and QoSR97/98 attribute are not abided by the agreement the mapping ruler of regulation.
Describe in detail below and how to adopt technical solution of the present invention one to solve to cause the process of the QoS attribute of actual use when HLR in the background technology and/or the QoSR99 attribute among the MS and QoSR97/98 attribute do not abide by the agreement the mapping ruler of regulation greater than the QoS attribute of contracting.
When MS moves because of the position, in the time of PDP Context need being switched to SGSN2, adopt technical scheme one of the present invention, SGSN1 is before sending SGSN Context Response message, at first judge whether satisfy between the signatory QoS of user in the PDP Context of this MS and/or QoSR99 attribute in the request QoS information and the QoSR97/R98 attribute agreement 3GPP TS 23.107 regulations mapping relations (following table 1), up-downgoing Maximum bitrate in finding the QoSR99 attribute that the user contracts (maximum those special rates) is 64kbps, and the Peak throughput class in the QoSR97/98 attribute is 9, when not satisfying the mapping ruler of table 1, then, the Peakthrogughput class in the QoSR97/98 attribute is revised as 4 according to the mapping ruler of table 1; The QoSR97/98 part of then MS being asked QoS, signatory QoS and finally consulting in the QoS attribute sends SGSN2 to by SGSN Context Response message.Like this, SGSN2 by SGSN Context Response message sink to request QoS and the Peakthroughput class among the signatory QoS become 4, by the Peak throughput class among the QoS of these parameter negotiations also is 4, and SGS N2 can use this to consult QoS and remove to upgrade GGSN.
When MS moves because of the position, again with PDP Context when SGSN2 moves back to SGSN1, SGSN2 is by SGSN Context Response message, with the request QoS in the PDP Context, signatory QoS with finally consult QoS attribute (being QoSR97/98) and send SGSN1 to.SGSN1 confirms the network capabilities support R99 of MS, the QoSR97/98 attribute need be converted to the QoSR99 attribute, mapping ruler according to following table 2, Peak throughput class parameter is that the Maximum bitrate parameter in the QoSR97/98 attribute of 4 o'clock correspondences is 64kbps in the QoSR97/98 attribute, therefore, after the conversion signatory QoS and the Maximum bitrate of request among the QoS be 64kbps, Maximum bitrate among the QoS that goes out by these parameter negotiations also is 64kbps, and SGSN1 can use the QoS of this negotiation to remove to upgrade GGSN then.Like this, the QoS attribute of reality use will conform to fully with signatory QoS attribute.
Figure C20061000222200191
Table 1 QoSR99 attribute is to the mapping ruler of QoSR97/98 attribute
Figure C20061000222200201
Table 2 QoSR97/98 attribute is to the mapping ruler of QoSR99 attribute
In sum, adopt technical scheme provided by the invention, between SGSN repeatedly in the handoff procedure, even QoSR99 attribute among HLR and/or the UE and QoSR97/98 attribute are not observed the mapping ruler between QoSR97/98 and the QoSR99, also can guarantee the correctness of the QoS attribute of actual use, the promptly actual QoS attribute that uses is consistent with the QoS attribute that the user contracts, thereby improves operator and user's satisfaction; In addition, technical scheme of the present invention can realize by existing protocol fully, so technical scheme is simple, and can be well and existing protocol and hardware compatibility.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (10)

1, the implementation method of switching between a kind of SGSN, when old side Serving GPRS Support Node SGSN is UMTS/GPRS R99 SGSN, and new side SGSN is characterized in that this method comprises the steps: when being GPRS R97/98 SGSN
After A, old side SGSN receive the SGSN context request of new side SGSN, mobile station MS request QoS in confirming the packet data protocol PDP Context does not satisfy the QoSR99 attribute after QoSR97/98 best property of attribute mapping rule, user's subscribed services quality Q oSR99 attribute in the PDP Context is changed out corresponding QoSR97/98 attribute according to the QoSR99 attribute to QoSR97/98 best property of attribute mapping rule, and send to new side SGSN;
The QoS that B, new side SGSN contract the QoSR97/98 attribute and make new advances in conjunction with the self-ability negotiation according to the user who receives;
The new QoS that C, new side SGSN will negotiate sends to Gateway GPRS Support Node GGSN.
2, method according to claim 1 is characterized in that, described steps A specifically comprises:
After A1, old side SGSN receive the SGSN context request of new side SGSN, mobile station MS request QoS in confirming PDP Context does not satisfy described QoSR99 attribute after QoSR97/98 best property of attribute mapping rule, and the QoSR99 attribute of described MS request QoS is changed out corresponding QoSR97/98 attribute according to described QoSR99 attribute to QoSR97/98 best property of attribute mapping rule;
A2, old side SGSN are carried on the QoSR97/98 attribute among the use QoS in described MS request QoSR97/98 attribute of changing out and the PDP Context in the SGSN context response SGSN ContextResponse message and send to new side SGSN.
3, method according to claim 2 is characterized in that, described step B comprises:
New side SGSN is according to the signatory QoSR97/98 attribute of the user who receives; Perhaps new side SGSN is according to the QoSR97/98 attribute of signatory QoSR97/98 attribute of the user who receives and MS request; Perhaps, new side SGSN is according to the QoSR97/98 attribute of signatory QoSR97/98 attribute of the user who receives and use, and consults the QoS that makes new advances in conjunction with self-ability.
4, according to claim 1,2 or 3 described methods, it is characterized in that described step C comprises:
The new QoS that new side SGSN will negotiate is carried on to upgrade in the PDP Context request Update PDPContext Request message and sends to GGSN.
5, according to claim 1,2 or 3 described methods, it is characterized in that this method also comprises:
New side SGSN is carried on Routing Area Update with the described new QoS that negotiates and accepts to send to MS in the Routcing AreaUpdate Accept message.
6, the implementation method of switching between a kind of SGSN, when new side SGSN is UMTS/GPRS R99SGSN, and old side SGSN is GPRS R97/98 SGSN, when MS supports 99 version QoS agreements, it is characterized in that this method comprises the steps:
After e, new side SGSN confirm that MS supports 99 version QoS agreements, consult the QoS that makes new advances according to the QoSR99 attribute in the user contracting data and in conjunction with self-ability; Described new QoS is as the first new QoS;
The first new QoS that f, new side SGSN will negotiate sends to GGSN.
7, method according to claim 6 is characterized in that, comprises before the described step e:
After a, old side SGSN receive the SGSN context request of new side SGSN, signatory QoS of the user in the PDP Context and MS request QoS are sent to new side SGSN with the QoSR97/98 attribute that uses QoS;
The MS request QoS that b, new side SGSN send according to old side SGSN, the signatory QoS of user and/or use QoS negotiate the second new QoS in conjunction with self-ability, and this second new QoS are sent to GGSN;
C, new side SGSN notice HLR upgrade the SGSN position, after HLR has notice user contracting data are sent to new side SGSN.
8, method according to claim 7 is characterized in that, described step e comprises:
After e1, new side SGSN confirm that MS supports 99 version QoS agreements, will ask QoS from the MS that old side SGSN receives and/or use the QoSR97/98 attribute of QoS to change out corresponding QoSR99 attribute to QoSR99 best property of attribute mapping rule according to the QoSR97/98 attribute;
E2, new side SGSN are according to the QoSR99 attribute in the user contracting data of HLR transmission; Perhaps, new side SGSN is according to the QoSR99 attribute of the QoSR99 attribute in the described user contracting data with the MS request of changing out; Perhaps, new side SGSN is according to the QoSR99 attribute of QoSR99 attribute in the described user contracting data and use, and negotiates the first new QoS in conjunction with self-ability.
9, according to claim 6,7 or 8 described methods, it is characterized in that described step f comprises:
New side SGSN is carried on the described first new QoS that negotiates in the Update PDP Context Request message and sends to GGSN, and GGSN sends Update PDPContext response message to new side SGSN after receiving this message.
10, according to claim 6,7 or 8 described methods, it is characterized in that this method also comprises:
New side SGSN is carried on the described first new QoS that negotiates to revise in the PDP Context request ModifyPDP Context Request message and sends to MS, if MS accepts the described first new QoS that negotiates again, then send the modification PDP Context and accept Modify PDP Context Δ ccept message to new side SGSN.
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